Rayleigh-Bénard (RB) convection, which is a fluid layer heated from below and cooled from the top, is an idealized model to study turbulent flows involving heat transport and has attracted much attention during the past few decades [1]}, [2]}, [3]}, [4]}.
The system is characterized by two control parameters: the Rayleigh number \(Ra\) , Prandtl number \(Pr\) , which are defined as
\(Ra=\frac{\alpha g \Delta T H^{3}}{\nu \kappa },\) 
